Lock indicating mechanism.



-E. L. TEICH. LOCK INDICATING MECHANISM.

APPLICATION HLED AUG. 15, I914. RENEWED JAN. 31.1916.

Patented Mar. 28, 1916.

3 SHEETS-SHEET 1- s 141M41 f/wwf Few/1 THE COLUMBIA PLANOGRAPH (0.. WASHINGTON, D. c.

E. L. TEICH.

LOCK INDICATING MECHANISM.

APPLICATION FILED AUG. 15, I914- R ENEWED JAN. 31,1915.

1,177.,151. Patented Mar. 28,1916.

3 SHEETSSHEET 2.

THE COLUMBIA PLANOGRAPH 120.. \vAsNINGTON. D. c.

E. L. TEICH.

LOCK INDICATING MECHANISM.

APPLICATION FILEDAUG- 15. 1914. RENEWED JAN. 31,1916.

1,177,151. Patented Mar. 28,1916.

3 SHE ETSSHEET 3.

K as; 2222 20 THE COLUMBIA PLANOGRAP" c0. WASHINGTDN, n. c.

. a'rn FFTQ.

ERNEST L. TEICH, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR T0 AMERICAN HARD- WARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON NECTICUT.

LOCK INDIOATING MECHANISM.

Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed August 15, 1914, Serial No. 856,896. Renewed January 31, 1916. Serial No. 75,487.

To all whom it may concern Be it known that I, ERNEST L. TEICH, a citizen of the United States, residing at New Britain, county of Hartford, Stateof Connecticut, have invented certain new and useful Improvements in Look Indicating Mech.- anism, of which the following is a full, clear, and exact description.

This invention relates to .lock mechanisms of a type employing a locking bolt freely operable from the inside of the lock,'and operable from the outside of the look by two differently constructed keys. In a lock of this type an indicator mechanism is provided in conjunction with means operable from the inside of the lock for dead-locking the door to which the bolt is applied, which means, in dead-locking position, cooperates with the indicator mechanism to place it in a telltale condition. The means controlled by one of the two keys referred to is arranged to dead-lock the door from the outside, and to place the indicator mechanism in telltale condition, the operation of the other of said keys having no effect on the indicator mechanism. These and other features will be more clearly seen from the following detailed specification, and from the accompanying drawings forming part thereof,and illustrating a preferable embodiment of the invention.

In these drawings: Figure lis a top plan view of a lock mechanism of the unit type,

embodying the improvements of the present invention, the dead-bolt being shown in re-, tracted position, and the indicator button in nonindicating position; Fig. 2 is a similar view with the dead bolt projected. and with the indicator button in telltale position; Fig. 3 is a reverse bottom plan View of the lock shown in Fig. 1; Fig; 4 is a rear end elevation of the lock mechanism shown in Fig. 1, the cover plate being broken away to disclose the interior; Fig. 5 is a transversesecticn on the line 5-5 of Fig. 1; Figs. 6 to 10 inelusive, show details of the lock mechanism.

Referring to the drawings by numerals, 1 indicates the inside escutcheon plate, and 2 the outside escutcheon plate, between which thelcck frame is held by suitable connecting screws, inthe usual manner employed in unit locks. This lock frame embodies the face plate 3, which has extending transthese plates having. suitable interconnecting site frame plate 3 webs as shown. The frame plate 3 on the inside of the lock, carries an inwardly eX- tending sleeve 1, for guiding the spindle i of the inside knob 4, thissleeve extending through the inner escutcheon l. The oppocarries a similar sleeve, whlch extends, in turn, through the outer escutcheon 2 for guiding the knob spindle 5 of the outside knob 5. i

A pivoted latch bolt 6 is carried by the face plate 3, and is pivotally attached thereto, the usual plunger G guiding in a web of the lock frame. The bolt is normally projected through the coil spring 7 on said plunger operating between the frame web and thebolt head. The plunger 6 ter minates in a U-shaped yoke member 8, having laterally offset end portions 8 positioned at opposite sides of the terminals of the knob spindles 4* and 5?. Below the latch bolt the face plate 8 of the lock frame carriesa pivoted or tilting stop-work button 9, in the form of a walking beam, one end of the button having pivoted thereto the forward end of a link 10, the rear end of which is bent downwardly and carries a pin 11 arranged, in one position on the walking beam button, to extend into a recess in the outer knob spindle 5 to lock said knob spindle against turning. This knob spindle, when not locked against turningby the pinion 11, is arranged toretract the latch bolt, and to this end has its inner end notched to receive and rotate therewith a roll-back 12, the opposite arms of which are arranged to engage the offsets 8 of the yoke, to retract the latch bolt when the knob is turned. (See Fig. 5.) At the opposite side of the locking frame the knob spindle l terminates, and, in turn, is slotted to receive a similar rollback 13, which cooperates with the offsets S at the side of the said offsets opposite the first roll-back 12. This roll-back is operable at all times by the inside knob to retract the latch bolt.

14 designates a dead-bolt arranged to be projected through the face plate 3 of the lock frame, and having a shank 15 extending rearwardly in the lock frame, and suitably guided therein. Intermediate its ends, this shankhas one side face cut away to provide a lug 16. which I term a retracting lug, and a shoulder 17 spaced thereon, which I may term a projecting shoulder (see Fig. 6). The forward or projecting movement of this dead-bolt may be limited by suitable stop means, such as the cotter pin 19. This deadbolt is moved to projecting and retracting position through the following mechanism. At a point above the dead-bolt, a rock shaft 20 is journaled between the plates 3 of the lock frame, one end journaling on a pin 21 carried by the frame plate, and the other end journaling upon the hub of certain stop-work controlling mechanism operated through the said rock shaft, as will be later explained. At the end opposite the pin 21, the rock shaft 20 is provided with a cam arm 22, having on one face thereof a cam 23 constructed to extend between the lug 16 and the shoulder 17 of the shank of the dead-bolt, to engage these parts when the shaft 20 is rocked to retract and project the dead-bolt. This same end of the rock shaft is recessed to rrovide a socket 241, within which is a further and inwardly extending squared socket 25, the first named socket journaling on the hub of a stop-work controlling arm 27. This same end of the rock shaft is flattened on opposite sides as 26 (Fig. 8), and a leaf spring 26 anchored in the frame engages these flat sides and tends to retain the shaft in bolt projected and retracted positions. At the end of the rock shaft opposite the cam arm 22, a bifurcated crank arm 28 is provided, extending from the shaft at an angle to the cam arm 22. The forward end of a pitman bar 29 is pivoted to this bifurcated crank. the bar extending rearwardly and upwardly, and terminating at a point above the upper offset 8 of the latch bolt yoke, (see Fig. 5). Adiacent this end of the pitman bar it is provided with a depending right angular arm 30, which extends beneath and beyond the under face of the upper offset 8, and terminates in an upwardly extending hook or abutment 31. This abutment is positioned in the plane of the offset 8, and is adapted to be engaged thereby in one position, and in one cycle of operation of the parts. A wear plate 32 is preferably attached to the rear end of this upper offset 8 of the yoke. The under edge ofthe arm 30 is notched as at 33 (Fig. 5), to receive a roll-back controlled by a key from the outer side of the lock, as will be hereinafter explained.

Attached to the rear end of the pitman bar 29 and depending therefrom, is an angular dog 34, the lower end of this dog being positioned in line with the upper offset 8 of the yoke. A coiled spring 35 is carried by the. pitman bar and connected to the end of the dog 34, normally tending to move said dog forwardly and against a pin 36, carried by the lower arm 30 of the pitman bar. As this dog is pivoted to the pitma-n bar, it may be moved independently of the bar and against the yoke offset to moveit in a. direc n e r c he at i elt-J Theouter knob 5'carries a cylinder lock mechanism (indicated in dotted lines in Fig. 1), the casing of this lock being designated by the numeral 37. This cylinder lockis of a peculiar construction and is specifically described and claimed in my co-pending application Serial No. 863,638, filed Sept. 26, 1914. For the purposes of the present disclosure it is sufiicient to state that this cylinder lock employs the usual rotatable plug element, and inner and outer concentric sleeves. The end of the plug, in the direction of the lock mechanism, carries a disk 38, having its edge cut away to provide shoulders 39 and 10. This disk carries a sleeve 41, having a socket -12 therein for the reception of a rollback spindle.

413 indicates the inner sleeve of the lock; 44 the outer sleeve, both sleeves terminating back of the disk 38 (shown in Fig. 9 of the drawings), there being a clearance space I (not shown) between these sleeve ends and said disk. Seated against the ends of the sleeves, and back of the disk 38, is a sliding blocking piece15 of a width equal substantially to the combined'width of the sleeves, said block having thereon a pin 16, which extends out from the block at a point between the cutaway edge of the disk and the casing of the lock, and in the line of move ment of the. shoulders 39 and 10 of the disk 38 so as to be engaged by said shoulders when the disk is moved relative to the block. The inner sleeve, between its inner end and the outer face of the disk 38, carries a pin 47, designed to engage the block 45 when the Y inner sleeve is rotated, and the outer sleeve 44: carries a similar pin 4Z8, likewise arranged to engage the blocking piece. The disk 38 carries on its outer and rear face a pin 19',

arranged to engage the pin 47 of the. inner sleeve, when the disk is rotated.

5O designates. a roll-back spindle seating in the socket 12 of the plug sleeve, and extending through the outer knob. sleeve 5' and through the outer roll-back 12, to a point between the roll-backs 12 and 13. This spindle will rotate when the plug is rotated, the manner of rotation of said plug roll-back 52, positioned in line with the] notched edge 33 of the lower arm 30 of the pitman bar; The rotation of} this rollback 52, in opposite directions, moves thepitmanj b r t pr iee a d newest he h er-belt The amount of rotationand direction of will be so bitted as to alone rotate the plug,

with its disk 38. and sleeve .41. The direction of rotation is limited to substantially a half turn in counter-clockwise direction (Fig. 5) or a half tufn in a clockwise direction as seen in Fig. 9, the shoulder 39 ofthe disk, engaging the pin 46 of the blocking piece 45, said piece being held against move ment by the pin 48 of the outer sleeve, thereby stopping the diskand spindle 40 at the end of substantially a half revolution. The outer sleeve 44: and also the inner sleeve do not rotate, and consequently the pin 48 of the outer sleeve forms a rigid abutment, preventing movement of the blocking piece as aforesaid. Operation of thecylinder look, through one key, will, therefore, act to retract the latch bolt. This key would be used, of course, when the outer knob spindle is locked. against rotation by reason of the stop-work button 9. and its associated parts, as heretofore described.

Another and differently constructed key is arranged to operate the pitman bar to project and retract the dead-bolt. Such a key would be so bitted to operate the pin tumblers of the cylinder look, so that the in ner sleeve 43 and the plug. would rotate together. It will be seen from Fig. 9 of the drawings that this will permit the rotation of these parts for at least a full revolution from the position shown in Fig. 9 to the left or counter-clockwise and return, this representing dead bolt projecting and retracting movement and also latch-retracting movement. The last part of the return movement corresponds to the latch-retracting movement by the first key heretofore described. As before stated, the roll-back 52 is in line with the notched end 33 of the pitman bar. Consequently,

the spindle may be turned for a full revolution in opposite directions, movement in a counter-clockwise direction (Fig. 9). operating to move the pitman bar and rock shaft in a direction to project the dead-bolt. Movement of said roll-back in the opposite direction, by the same key, will engage the notch 33, to move to ate e ain. ndi a es'leee eaisn19% .bodiment, comprises if the second keyisinserted from the outside of the door in the cylinder lock,

cated on the outside of the look. This indicating mechanism, in its preferable ema button arranged to beyond the outer escutcheon plate, whenin one telltale or indicating position. In the drawings, 53 designates the outer head of this indicator button, the shank thereof extending inwardly in the lock and through the frame plate thereof, its inner end 5% being conical in shape to provide beveled sides. Intermediate its' ends, this button member is provided with an annular groove 55. A spring 56, of the hair pin type, is'anchored at itsclosed end to the frame plate 3 (see Fig.

and has its arms engaging in this groove. and normally tends to move the button inwardly so that its head is flush, at least, with the outer face of the escutcheon plate. The adjacent edge of the rock shaft 20 is provided with a beveled edge, shown best in Fig. l of the drawings, this beveled edge being designated 57, and extending toward the outer side of the lock. The conical end 54 of the indicator button is positioned closely adjacent this edge of the rock shaft, so that when the rock shaft is oscillatedto project the dead-bolt, this beveled edge 57 Will act against the conical beveled end of the button to force the same outwardly against the tension of its spring 56. In this position of the parts the head of the button will project beyond the escutcheon plate and will become an indication, or signal, that the door is locked against operati n by the ordinary means. Therefore. it will be evident that when the occupant of the room, to the door of which desires to have the room undisturbed by, say, for instance, the maid in the case of a hotel, the second key described will be extend through and utilized to project the dead-bolt from the outside, therebv deadlocking the door from the outside. and at the same time projecting thebutton indicator, by reason of the operation of the be eled edge of the rock shaft thereagainst. The d or may not be opened by the maid, who will have a key of the type first described. and the ind cator button, by its position, will announce the fact that this room is not to be entered. As before explained, the key ofthe first class can o erate the plug of the cylinder l ck f r a half revolution in one direction only. With the deadbolt projected, the notched edge 33 of the pitman bar cannot beengaged by the rollback 52 (which. of course, rotates with the spindle 50 and latch rollback 51), because a c mplete revolution on the part of this roll-back 52 is necessary to engage such notch and the spindle may only be rotated a half re lution through class. -Where a used, however. a

the key of the first key of the sec nd class is complete revolution may be .giyen the spindle to bring the roll-back 52 into engagement with the notch 33, so that the dead-bolt may be retracted.

Means are provided for projecting the dead-bolt from the inside of the look. This means, takes the form of a thumb turn 58, whose spindle extends through the escutcheon plate and through the aperture of the stop-work controlling member 27, and thence into the squared socket 525 of the rock shaft, coupling the thumb turn to the rock shaft, and also coupling the stop-work controlling member to the rock shaft. By means of the thumb turn, the rock shaft may be oscillated to project and retract the dead-bolt in the same manner in which it is operated through the key controlling means heretofore described. It will, of course, be understood that'when the rock shaft 20 is oscillated in the direction to retract the deadbolt, its beveled edge 57 will move its high point away from the conical end 54 of the indicator button, so that the spring of said button mav move it inwardly to non-indicating position.

I have heretofore described a specific embodiment of my invention, but desire it understood that the same is susceptible of variation in construction and in relative ar rangement of the parts, within the spirit of the invention and the scope of the appended claims. Also, I desire it understood that such parts of my invention as are herein shown and are also described, and are not claimed herein, are specifically described and claimed in mv co-pending applications Serial Nos. 863.637 and 863,638, both filed September 26, 1914;.

What I claim, therefore, and desire to secure by Letters Patent, is 1- 1. In a look, a bolt, a knob at the inside of the lock for operating the same, other means at the inside of the lock for deadlocking the door to which the lock is applied, an indicator at the outside of the lock associated with the said dead-locking means and arranged to be operated thereby when the door is dead-locked from the inside to indicate dead-locking of the door, a key for dead-locking and unlocking the door from the outside with means for operating said indicator by the operation of said key to indicate dead-locking of the door.

2. In a lock, a bolt, a knob at the inside of the lock for operating the same, other means at the inside of the lock for deadlocking the door to which the lock is ap plied, an indicator at the outside of the lock associated with the said dead-lockingmeans and arranged to be operated thereby when the door is deadlocked from the inside to indicate dead-locking of the door, a key for dead-locking and unlocking the door from the outside with means for operating said indicator by the operation of said key to indicate dead-locking of the door, and a different key for unlocking the door Without operating said indicator.

3. In a look, a latch bolt, a knob at the inside of the lock for retracting said latch bolt, a knob at the outside of the lock for retracting the same, means for locking said outside knob against latch retracting movement, means controlled by a key for retracting said latch bolt from the outside of the look when said outside knob is looked, a dead bolt, means at the inside of the lock for operating said dead-bolt, an indicator at the outside of the lock associated with the aforesaid dead-bolt operating means and arranged to be operated thereby when said means is operated from the inside of the lock, and means controlled by a second and different key and operable from the outside of the lock to operate said dead-bolt and including means arranged to operate said indicator.

4:. In a look, a latch bolt, a knob at the inside of the lock for retracting said latch bolt, a knob at the outside of the lock for retracting the same, means for locking said outside knob against latch retracting movement, means controlled by a key for retracting said latch bolt from the outside of the look when said outside knob is locked, it deadbolt, means at the inside of the lock for operating said dead-bolt, an indicator at the outside of the lock associated with the aforesaid dead-bolt operating means and arranged to be operated thereby when said means is operated from the inside of the lock, and means controlled by a second and difierent key and operable from the outside of the lock to operate said dead-bolt and ineluding means arranged to operate said indicator, said second key being also operable to retract said latch bolt. 7

5. In a lock, a latch bolt, a knob at the inside of the lock for retracting said latch bolt, a knob at the outside of the lock for retracting said bolt, means for locking said outside knob against latch retracting movement. means controlled by a key from the outside of the lock for retracting said latch bolt independently of said outside knob, a dead-bolt, means operable from the inside of the lock for proiecting and retracting said dead-bolt, an indicator at the outside'of the lock arranged for projection and retraction, means operable by said dead-bolt operating means for operating said indicator, means controlled by a second key from the outside for projecting and retracting said dead-bolt, said means including indicator operating means, said second kev being also operable to retract said latch bolt.

6. In a lock, a bolt, a knob at the inside of the lock for operating said bolt, other means at the inside ofthe lockfor dead-locking the door to which the lock is applied, an

indicator at the outside of the lock arranged for projection and retraction,

means operable by said dead-locking means to operate said indicator means to indicate deadlock ment, means controlled by a key from the outside of the lock for retracting said latch bolt independently of said outside knob, a dead-bolt, means operable from the inside of thelock for projecting and retracting said dead-bolt, an indicator at the outside of the lock arranged for projection and retraction, cam means operable by said bolt operating means for operating said indicator, means controlled by a second key from the outside for projecting and retracting said dead-bolt, said means including indicator operating means, said second key being also operable to retract said latch bolt.

8. In a look, a latch bolt, knobs at the inside and outside of the lock for independently retracting said latch bolt, means for locking the outside knob against latch retracting movement, means controlled by a key from the outside of the lock for retracting said latch bolt independently of said outside knob, a dead-bolt, a rock shaft with means controlled thereby and operable by oscillation thereof to project and retract said dead-bolt, means operable from the inside of the lock for oscillating said rock shaft, means controlled by a second key from the outside of the lock for oscillating said rock shaft and for retracting said latch bolt, an indicator member at the outside of the lock arranged for projection and retraction, with means controlled bythe oscillation of said rock shaft for operating said indicator.

9. In a lock, a latch bolt, knobs at the inside and outside of the lock for independently retracting said latch bolt, means for locking the outside knob against latch retracting movement, means controlled by a key from the outside of the lock for retracting said latch bolt independently of said outside knob, a dead-bolt, a rock shaft with means controlled thereby and operable by the oscillation thereof to project and retract said dead-bolt, means operable from the inside of the lock for oscillating said rockshaft, means controlled by a second key from the outside of the lock for oscillating said rock shaft and for retracting said latch bolt, an indicator member at the outside of the lock arranged for projection and retraction, said indicator member having at least two telltale positions, with means normally tending to hold said member in one of said two positions, and means controlled by the oscillation of said rock shaft in bolt projecting direction for moving said indicator into a second telltale position.

ERNEST L. TEIOH. Witnesses:

WILLIAM V. COLLINS, G. A. SMITH.

Copies of this patent may be obtained for flve cents each, by addressing the Commissioner of latenta,

Washington, D. G," i 

